Brush



FIG. 1 is a front elevation of a brush;

FIG. 2 is a left side elevation thereof;

FIG. 3 is a right side elevation thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevation thereof; and,

FIG. 7 is a perspective view thereof.

The ornamental design for a brush, as shown and described.